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How to reduce the ammonia nitrogen content in refinery wastewater

2007-12-30View Original

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Dear experts: The ammonia nitrogen level in the wastewater discharged by my company is 100 mg/l. How can this level be reduced? The current treatment process is: oil separator -- air flotation tank -- CAST biological tank. The ammonia nitrogen discharge limit is 15. This indicates that the ammonia-containing wastewater has been treated with gas prior to being fed into the wastewater system.

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